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Provides access to system-related information and resources including standard
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This class contains various methods for manipulating arrays (such as sorting and
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HashMap is an implementation of Map. All optional operations are supported.All
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A task that returns a result and may throw an exception. Implementors define a
single method with no
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Factory and utility methods for Executor, ExecutorService,
ScheduledExecutorService, ThreadFactory,
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An interface for the creation of Connection objects which represent a connection
to a database. This
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